Katalog wytwórni
- Orion Home Video
- Orion Music
- Orion Publishing Co
- Orion Read
- Orivous
- Ork
- Orkus
- Orla Gartland
- Orlando
- Orleans
- Orlyn
- Ormo Redcords
- Ornament
- Ornaments
- Orngl
- Oro
- Oroom
- Orphan
- Orphee
- Orpheia
- Orpheo
- Orpheus
- Orphika
- Orson
- Oryx
- Osama
- Osare! Editions
- Oscar
- Oscarson
- Osceola
- Oscilla Sound
- Oscillate Tracks
- Oscillation
- Oscilloscope Pictures
- Osd
- Osiris
- Osirius
- Osk
- Oskar
- Oslo
- Oslo Session Recordings
- Osm
- Osmond
- Osmonds
- Osmose
- Osmosys
- Osmund Audio
- Oso Polita
- Osom
- Osp
- Osservatorio Cultura Mediterranea
- Ossian
- Ostalgica
- Ostereo Limited
- Ostfunk
- Ostgut Ton
- Osthafen
- Ostinato
- Ostra Discos
- Ostwind
- Ot
- Ota
- Ota Records
- Otaku
- Otb
- Otb Records
- Otc
- Othaz
- Othel
- Other
- Other Cinema
- Other Electrics
- Other Eyes
- Other Music
- Other People
- Other People's Music
- Other Power
- Other Side of Desire Music
- Other Tongues
- Other Voices
- Other/Other
- Otherside
- Othgr
- Othpo
- Oti-O
- Oti-O Records
- Otih Records
- Otis
- Otiti
- Otiti
- Otitis Media
- Oto Casa Discografica
- Oton
- Otoroku
- Otr
- Otrabanda
- Otrlive
- Otroo
- Otsb
- Otsk